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Apparatus and method for extrusion of thin-walled tubes

  • US 20050042402A1
  • Filed: 09/22/2004
  • Published: 02/24/2005
  • Est. Priority Date: 10/30/2001
  • Status: Active Grant
First Claim
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1. A thin-walled tubular member extruded by an apparatus for extrusion of at least one thin-walled tubular member from a pre-form of polymeric material, said apparatus comprising:

  • an extrudate die having an orifice formed therethrough;

    a barrel having a bore in communication with said orifice;

    a piston slideably disposed in said bore;

    a ram mounted to said piston; and

    a guide rod extending through said bore, said guide rod being constrained so as to maintain a relatively constant annular gap between said barrel and said guide rod.

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